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Issue 6, 2017
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P3-type K0.33Co0.53Mn0.47O2·0.39H2O: a novel bifunctional electrode for Na-ion batteries

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Abstract

A novel electrode material, P3-type K0.33Co0.53Mn0.47O2·0.39H2O (KCM), is synthesized through an easily-operated sol–gel method and it delivers considerable Na ion storage abilities when employed as both a cathode and an anode in NIBs. As a cathode, the compound displays remarkable average voltage potentials (over 3 V) and a high discharge capacity (114 mA h g−1 at 100 mA g−1). As an anode, a safe and ideal average voltage potential (0.53 V), a high discharge capacity (174 mA h g−1), and a long cycle life (950 cycles at 500 mA g−1) are also delivered together. In addition, a KCM-based full cell is subsequently built and even without any optimization it can still exhibit a high energy density (91 W h kg−1) accompanied by a long cycle performance (100 cycles at 100 mA g−1).

Graphical abstract: P3-type K0.33Co0.53Mn0.47O2·0.39H2O: a novel bifunctional electrode for Na-ion batteries

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Publication details

The article was received on 07 Jul 2017, accepted on 07 Aug 2017 and first published on 07 Aug 2017


Article type: Communication
DOI: 10.1039/C7MH00512A
Citation: Mater. Horiz., 2017,4, 1122-1127
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    P3-type K0.33Co0.53Mn0.47O2·0.39H2O: a novel bifunctional electrode for Na-ion batteries

    S. Wang, T. Sun, S. Yuan, Y. Zhu, X. Zhang, J. Yan and Q. Jiang, Mater. Horiz., 2017, 4, 1122
    DOI: 10.1039/C7MH00512A

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